Basing on the moving least-squaresapproximation, the node distribution in EFM is very free.
无单元法采用基于滑动最小二乘近似的位移插值形式，节点布置变得非常自由。
2
However, the generalized moving leastsquaresapproximation makes require leastsquaresapproximation with regard to functional and its derivative value on all nodes.
而广义移动最小二乘近似要求近似函数及其导数在所有节点处的误差的平方和最小。
3
This article focuses on the topics that by connecting the the least-squares Minimization with the functional abstract space, the abstract definition of the best approximation problem is abtained.